28109025

素因数分解:

$3^5\times 5^2\times 7^1\times {\mathrm{661}}^1$

素因数の和:693

約数の個数: 72

約数和(自身を含む): 59760064

約数和(自身を除く): 31651039

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 81, 105, 135, 175, 189, 225, 243, 315, 405, 525, 567, 661, 675, 945, 1215, 1575, 1701, 1983, 2025, 2835, 3305, 4627, 4725, 5949, 6075, 8505, 9915, 13881, 14175, 16525, 17847, 23135, 29745, 41643, 42525, 49575, 53541, 69405, 89235, 115675, 124929, 148725, 160623, 208215, 267705, 347025, 374787, 446175, 624645, 803115, 1041075, 1124361, 1338525, 1873935, 3123225, 4015575, 5621805, 9369675, 28109025]

約数ペア:

[(1, 28109025), (3, 9369675), (5, 5621805), (7, 4015575), (9, 3123225), (15, 1873935), (21, 1338525), (25, 1124361), (27, 1041075), (35, 803115), (45, 624645), (63, 446175), (75, 374787), (81, 347025), (105, 267705), (135, 208215), (175, 160623), (189, 148725), (225, 124929), (243, 115675), (315, 89235), (405, 69405), (525, 53541), (567, 49575), (661, 42525), (675, 41643), (945, 29745), (1215, 23135), (1575, 17847), (1701, 16525), (1983, 14175), (2025, 13881), (2835, 9915), (3305, 8505), (4627, 6075), (4725, 5949)]